MICROSOFT WINDOWS Microsoft Windows operating system was developed by Microsoft to overcome the limitations of its own MS-DOS operating system. First successful version of this operating system was Windows 3.0, released in 1990. Subsequently released versions were Windows 95, Windows 98, Windows 2000, Windows XP, Windows XP Professional, and Windows Vista. The numbers associated with some of these released versions indicate their year of release. Main features of Microsoft Windows are as follows : 1. 1. Its native interface is a GUI. Hence, for a new user it is easier to learn and use a computer system. 2. Microsoft Windows was designed to be not just an operating system but also a complete operating environment. That is, all its programs conform to a standard way of working. For example, a Microsoft Windows word processor works similarly the way a Microso